Trunks and branches of red and white oaks of all sizes; larvae bore into phloem and outer sapwood; galleries girdle and kill small trees; newly transplanted trees and those weakened or stressed are most susceptible.

roundheaded larva, slender, about .7 inch (18 mm) long; adult narrow, light brown, spine on the third and fourth segments of antennae. One generation per year.

Seedlings and sprouts about .5 to 1 inch (12 to 25 mm) diameter; red and white oaks; larva bores down center of stem, cutting off sections, burrows to stem base or roots to overwinter; frass is ejected through row of small holes in bark, kills large numbers of seedlings and sprouts in Southeast.